6370-08-7

Basic information

• Product Name: Acid Blue 158
• Synonyms: Chromate(2-), hydroxy3-(hydroxy-.kappa.O)-4-1-(hydroxy-.kappa.O)-8-sulfo-2-naphthalenylazo-.kappa.N1-1-naphthalenesulfonato(4-)-, disodium, (T-4)-;chromate, hydroxy[3-hydroxy-4-[(1-hydroxy-8-sulfo-2-naphthalenyl)azo]-1-nap;Chromate,hydroxy[3-(hydroxy-kappaO)-4-[[1-(hydroxy-kappaO)-8-sulfo-2-naphthalenyl]azo-kappaN1]-1-naphthalenesulfonato(4-)]-,disodium,(T-4)-;hydroxy[3-(hydroxy-kappaO)-4-[[1-(hydroxy-kappaO)-8-sulfo-2-naphthalenyl]azo-kappaN1]-1-naphthaleneChromate;Blue 2G;Chromacyl Blue GG;Disodium 3-hydroxy-4-[(1-hydroxy-8-sulpho-2-naphthyl)azo]naphthalene-1-sulphonate;Acid Blue 158
• CAS NO: 6370-08-7
• Molecular Formula: C20H12N2O8S2.2Na
• Molecular Weight: 518.433
• EINECS: 228-875-6
• Mol File: 6370-08-7.mol
• Article Data: 0

Chemical Properties

• Boiling Point: 508.4ºC at 760 mmHg
• Flash Point: 261.3ºC
• Appearance: /
• Density: 1.29g/cm3
• Vapor Pressure: 1.86E-10mmHg at 25°C
• Refractive Index: 1.658
• CAS DataBase Reference: Acid Blue 158(CAS DataBase Reference)
• NIST Chemistry Reference: Acid Blue 158(6370-08-7)
• EPA Substance Registry System: Acid Blue 158(6370-08-7)

Safety Data

• Hazardous Substances Data: 6370-08-7(Hazardous Substances Data)

Usage

Description

Acid Blue 158 is a synthetic dye characterized by its green light blue color and dark blue powder form. It is soluble in water, producing a blue solution, and also soluble in alcohol. When mixed with strong sulfuric acid, it turns blackish green, but upon dilution, it reverts to blue. In a thick solution of sodium hydroxide, it exhibits a purple color. The presence of copper ions in dyeing results in a dark hue. Acid Blue 158 is known for its good discharge and exhaust dyeing properties.

Uses

Used in Textile Industry:
Acid Blue 158 is used as a dye for various types of fabrics, including wool, silk, nylon, and wool/nylon blended fabrics. It is particularly suitable for dyeing woolen fabrics and carpets, as well as for leather coloring. It can also be used in combination with cationic dyes for one-bath dyeing of wool/acrylic blends.
Used in Printing Industry:
Acid Blue 158 is utilized for direct printing and discharge printing on wool fabrics, providing vibrant and long-lasting colors.
Standard:
The fastness and performance of Acid Blue 158 are measured by various standards, including:
Light Fastness: ISO 5-6, AATCC 5
Soaping: ISO 3, AATCC 2
Perspiration Fastness: ISO 4, AATCC 2
Oxygen Bleaching: ISO 4, AATCC 3
Fastness to Seawater: ISO 1-2, AATCC 1
Fading: Stain ISO 3-4, AATCC 4-5
These standards ensure the quality and reliability of Acid Blue 158 in various applications, making it a versatile and widely used dye in the textile and printing industries.

Preparation

4-Amino-3-hydroxynaphthalene-1-sulfonic acid diazo, and 8hydroxynaphthalene-1-sulfonic acid?coupling, and then with excessive sulfuric acid aqueous acid chromium solution common heating, in 115 ℃ : keep 7 hours, make dye create chromium complex.

Contact allergens

This azo dye has the Color Index nr. 14880. It is found in suture materials.

Standard

Light Fastness

Fading

Stain

ISO

5-6

AATCC

5

InChI:InChI=1/C19H20N2O3S/c1-4-24-18(22)16-11(2)20-19(25)21-17(16)14-9-10-15(23-3)13-8-6-5-7-12(13)14/h5-10,17H,4H2,1-3H3,(H2,20,21,25)